3120211121 has 4 divisors (see below), whose sum is σ = 3136378212. Its totient is φ = 3104044032.

The previous prime is 3120211091. The next prime is 3120211189. The reversal of 3120211121 is 1211120213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1801068721 + 1319142400 = 42439^2 + 36320^2 .

It is a cyclic number.

It is not a de Polignac number, because 3120211121 - 2¹⁸ = 3119948977 is a prime.

It is a super-2 number, since 2×3120211121² = 19471434879224153282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3120211096 and 3120211105.

It is not an unprimeable number, because it can be changed into a prime (3120211621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8083256 + ... + 8083641.

It is an arithmetic number, because the mean of its divisors is an integer number (784094553).

Almost surely, 2^3120211121 is an apocalyptic number.

It is an amenable number.

3120211121 is a deficient number, since it is larger than the sum of its proper divisors (16167091).

3120211121 is a wasteful number, since it uses less digits than its factorization.

3120211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16167090.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 3120211121 is about 55858.8499792110. The cubic root of 3120211121 is about 1461.2616730507.

Adding to 3120211121 its reverse (1211120213), we get a palindrome (4331331334).

The spelling of 3120211121 in words is "three billion, one hundred twenty million, two hundred eleven thousand, one hundred twenty-one".